Oil heater



W. A. LACKE.

OIL HEATER.

- APPLICATION FILED FEB. 21. 1921.

Patented Apr. 11, 1922.

UNITED STATES PATENT OFFICE.

OIL HEATER.

Specification of Letters Patent.

Patented Apr. 11, 1922.

Application filed February 2 1, 1921. Serial No. 446,813.

' vices, primarily to fuel oil burners, especially adapted for use in stoves and furnaces.

The objects of the invention are to provide novel means for varying the height of oil in an open, oil burner and therefore the amount of oil burning at a given moment; to provide means for heating the -oil in the burner, thereby facilitating the burning of the oil and to provide easily regulatable' means for varying the intensity of heating of the oil.

The invention consists in means for carrying out the foregoing and other objects which can be easily and cheaply made, which is satisfactory in use and not readily liable to get out of order. More )articu-' larly the invention consists in many eat-ures and details of construction which will be hereafter more fully set forth in the specification and claims.

Referring to the drawings in which like numerals denote like parts- The single figure of the drawing is a side elevation, with certain parts insection showing a stove or furnace equipped with mechanism illustrating this invention in its preferred form. A

The stove or furnace takes conventional form having a lower chamber or fire box 10 and an upper or combustion chamber 20. The fire box has a top opening 12 and a side opening 14, clos'eable by adamper' door 16 pivoted at 18in the ordinary manner, well understood in the furnace art.

,Detachably secured across the opening 12 of the fire box 10 by any suitable means as screws 13, is an upper combustion chamber 20 provided in the center of its bottom 22 with a perforation 24 of substantially less diameter than the diameter of the combustion chamber in Whose side is a perforation 26 closed by a plate or door 28. From the top of combustion chamber 20 extends a conventional chimney 30.

Fire box 10 has a base plate '32 on which rests a vertically perforated pedestal 34 secured in place by any suitable means such as screws 36. In the central perforation 38 of pedestal 34 is located a downwardly extending screw 40 adjustably positioned by screwthreaded engagement with a. nut 42 resting on the top of the pedestal. Carried by the upper portion of the screw 40, in the particular case here illustrated, integral therewith, is an open top oil burner chamber 44 of such size and shape that its upper edges 46 approach but do not touch the adjacent edge portion 48 of the opening 24 in plate 22, so that there is always left a relatively narrow passageway 50 between the upper edge of the cup 44 and the plate 20 fire box 10 through the opening 14, can pass to the opening 24, thence to the combustion chamber 20 and chimney 30. Thesize of this opening 50 can be readily varied in constructing the device initially or thereafter by changing the position of screw 40 in nut 44, in the obvious manner.

At one side of oil chamber 44 is a downwardly extending pipe 52 leading to a supplemental oil chamber 54 having a discharge port 55 selectively closable by a screw cap through which air, having first entered the 56. This chamber 54 permits the settling of sediment and heavy unburnable oil from chamber 44 so that it can be stored until such time as is convenientfor drawing it off.

Detachably mounted within the oil chamber 20 by means of screw threaded member 58 is a vertical column 60 terminating at its 1 upper end in a plurality, in the particular case here illustrated, two smaller rods or columns,62. These rods are of metal or other heat conducting material and extend up through the perforation 24 in plate 20 in such a position that when air moves from the fire box 10 through passager5'0 at a high rate of speed, it will be directed against and strike these columns 62 and that when it moves at a slower rate of speed it will partially or wholly fail to strike these columns, the result being that the flame resulting from the combustion of the oil with this air strikes or fails to strike these columns 62 with resulting greater or less heating of the columns and consequently of the oil in cup 44.

Entering one side of oil chamber 44 is a horizontal oil supply pipe 64. Outside the fire box 10 this pipe 64 is connected through flexible pipe 66 to one port 68 of a regulating tank 70, supplied with oil at a port 72 through a flexible pipe 74- from the main reservoir 76. located for instance upon a suitable bracket 78.

The port 72 is closable by'a piston valve 80 actuated by one arm of a bell crank 82 pivoted inside of tank 70 at 84, the other arm 86 of the bell crank bearing a float member 88 resting in oil 90 within the tank 70.

This tank is provided near its top with an overflow pipe or passage 92, so positioned that it is always near the top of the normal level of oil 80 in all positions of the tank when it is tilted, as hereafter described.

Tank 70 is suitably secured upon a long lever 94 pivoted at 96 on a suitable base 98.

' On the other side of pivot 96 is another arm 94 of lever 94. carrying an adjustable set screw 100 adapted to engage the side of base 96. Main lever arm 94 is adjustably positioned with reference to the base 98 by an adjustable set'screw 102 carried by an arm 104 extending from the main body of the base.

Suitably secured to the outer end of lever arm 94, for instance in a perforation 106, is a cord 108 which after passing over a suit able pulley 110, leads to a distant operators station.

Similarly damper door 16 has attached to it another cord 112 passing over suitable pulleys 114 and leading away to the same operators station.

Assuming that the movable parts" of the device are in full line position, shown in the drawing, and that oil has been admitted to tank 70 up to the level shown, viz., that line A, the float 88 rises sufficiently to close valve 80 in port 72 with the result that oil is maintained at the level of line A in oil chamber 44. 'If the operator wishes to use the device he applies a torch or the like to opening 26 and lights the oil in chamber 44. As the oil burns it reduces the level of oil in chamber 44 and consequently in chamber 70 below line A, thus allowing float 88 to settle and open the valve 80 to admit more oil. As soon as the oil enters the float again rises and closes valve 7 2, thus restoring conditions to normal.

The operator admits nough air for this burning purpose by pulling upward on cord 112 and thus opening damper 16. With a given opening of the damper 16 air will flow at a predetermined speed through the passage 50, causea certain amount of combustion around the metal columns 62, thus heating those columns and by them heating column 60 thereby heating the oil in chamber 44 and increasing the ease with which it burns, thus governing the'amount of oil .burned and the heat produced. By opening damper 16 further air will rush'throughspassage 50 at greater speed, thereby giving the members 60 and 62 more intense heating, thus increasing the heating of the oil in chamber 44 and its consequent consumption. Closing the damper 16 partially or wholly reducesthe volume of air, consequently leaving members 62-60 cooler, and reduces the rate of the burning of'the oil. This is one method of regulation.

The second method of regulation consists in pulling cord 108 upward, thus bodily elevating and therefore tilting tank 70, thus raising the effective level of the oil in the tank at which point the float operates and thus increasing the effective height of the oil in the chamber 44. It is obvious that if the oil is higher than line A in chamber 44, air passing through passage 50 will more easily strike the oil and cause it to vaporize and burn than will be the case if the oil is say half way down chamber 44. The level of the oil also obviously has a marked eifect on the amount of heat it acquires from the heated members 6260 in the manner ,described. By combining these two methods of regulation the operator located at his station distant from the furnace may secure very fine regulation of the amount of heat delivered by the burner.

By adjusting the set screw 100 the constructor' can limit the height of elevation and the consequent amount of tiltin of the ters Patent, is

1. In a device of the class described an oil burning receptacle, means supplying-it with oil and a supplemental storage tank for heavy waste oil located below said oil supply means operatively connected to the receptacle below the normal level of oil in the receptacle so that heavy oil in said receptacle drains into said tank.

2. In a device of the class described an oil burning receptacle, means supplying it with oil, and a supplemental storage tank for heavy waste oil located below the point where said oil supply means enters the receptacle and operatively connected to the receptacle below the normal level of oil in the receptacle so, that the waste oil drains out of the receptacle --into said tank.

3. Inmechanism of the class described, a support, a lever pivoted thereto, an oil tank carried, by the lever, provided with oil intake and delivery passages, a valve for the former passage, a float in the tank controlling said valve and means for tilting the lever to vary the point above the supportat which the 'ceptacle and for varying its height therein.

valve, means for tilting the lever to vary the point above the support at which the float closes the valve, and means for varying the amount of tilting movement of the lever and tank in each direction.

5. In mechanism of the class described, an open oil chamber adapted to retain burning oil. a heat conductingmember extending from the interior of the oil chamber, below the normal level of the oil to a point above such level, means for regulatedly conducting air over the oil chamber toward said projecting member whereby as the oil is burned, in the conducted air, flames are regulatedly directed as desired toward the projecting member, for the purposes set forth.

6. In mechanism of the class described, an open oil receptacle, a heat conducting member extending from the lower portion of the receptacle upward, means for directing air across the edge of the receptacle towards said conducting member and means for regulating the amount of air so delivered.

7. In mechanism of the class described, an open oil receptacle, a heat conducting member extending from the lower portion of thereceptacle upward, means for directing air across the edge of the receptacle towards said conducting member, means for regulating the amountof air so delivered, means for supplying oil tothe oil chamber and for regulating the flow of oil thereto.

8. In mechanism of the class described, an open oil receptacle, a heat conducting member extending from the lower portion of the receptacle upward, means for directing air across the edge of the receptacle towards said conducting member, means for regulating the amount of air so delivered, and means for supplying oil to said chamber and for varying its height of oil therein up and down said conducting member, for the purposes set forth.

9. In mechanism of the class described, an open oil burning receptacle, means for directing air across the edge of the receptacle, means for regulating the amount of air so delivered, means for supplying oil to said re- 10. In mechanism of the class described, an open top oil burner, means for burning oil in the receptacle, a supply pipe leading to the receptacle. a supplemental tank for delivering oil to the oil receptacle, means for supplying oil to the supplemental tank, and a float valve in the supplemental tank for controlling the oil in that tank and consequently at the burner, means mounting the supplemental tank whereby it can be, elevated and tilted and lowered and tilted to determine the level at which its valve mechanism maintains the oil at the burner.

11. In mechanism of the class described,

a support, a lever pivoted thereto, an oil tank carried by the lever, provided with oil intake and delivery passages, a valve for the former passage, a float in the tank controlling said valve and means'for tilting the lever to vary the point above the support at which the float closes the valve, there being an overflow passage for the tank positioned to be eifectivein all angular positions of the tank. I

12. In mechanism of the class described, a support, a lever pivoted thereto, an oil tank carried by the lever, provided with oil intake and delivery passages, a valve for the former passage, a float in the tank controlling said valve. means for tilting the lever to vary the point above the support at which the float closes the valve and means for var; ing the amount of tilting movement of the lever and tank in eachdirection, there being an overflow passage for the tank positioned to be effective in all angular positions of the tank.

13. In mechanism of the class described. a fire box, a combustion chamber above it, there being a passage between the two, an open top oil burning receptacle in. the fire box with its edge adjacent to the edge of said passage and means for regulatedly admitting air to the fire box and thence over the edge of the receptacle to the combustion chamber.

14:. In mechanism of the class described, a fire box, a combustion chamber above it, there being a passage between the two, an open top oil burning receptacle in the fire box with its edge adjacent to the edge of said passage, means for regulatedly admitting air to the fire box and thence over the edge of the receptacle to the combustion chamber, and means for regulating the distance between the oil receptacle and the edge of said perforations for the purposes set forth.

15. In mechanism of the class described, a fire box, a combustion chamber above it, there being a passage between the two, an open top oil burning receptacle in the fire box with its edge adjacent to the edge of said passage, means for regulatedly admitting air to the fire box and thence over the edge of the receptacle to the combustion chamber, and means for bodily moving the oil burning receptacle toward and from the edge of said passage for the purposes set forth.

In witness whereof, I have hereunto sub-- scribed my name in the presence of two witnesses.

WILLIAM A. LACKE.

Witnesses: MAGDALEN D. LACKE, ALMA A. NIoHoLs. 

